Hijacks Ctrl+Shift+Left/Right (switch to Visual) without option to turn this off?

Describe the bug
Since about 2-3 months now, I've noticed that VIM switches from input mode to visual mode when pressing ctrl+shift+left/right. This does not happen when ctrl+left/right is used or shift+left/right is used. If both are used it does switch to the visual mode though which is a bit unpleasant since the input started in a different character position and for example in the following gif removed one more character to the right (the semicolon):

The gif first shows navigation with shift+left/right, then ctrl+left/right (both behave correctly), then ctrl+shift+left/right with x at the end (incorrect/disputed behaviour).

To Reproduce
Steps to reproduce the behavior:

1. Open file
2. Switch to input mode
3. Navigate with ctrl+shift+left/right
4. Observe switch to visual mode
5. Press x or d to delete selection -> Observe that because of visual mode selection one character to the left/right is additionally removed

I haven't found a way to disable this behaviour, but this didn't used to be the default behaviour before.

Expected behavior
Either ctrl+shift+left/right preserves input mode and does not go into visual mode or an option can enable/disable this behaviour.

Screenshots
Please see above

Environment (please complete the following information):

• Extension Version: 1.17.1
• OS Version: Windows_NT x64 10.0.19041
• VSCode version: 1.52.0-insider

    "vim.camelCaseMotion.enable": true,
    "vim.mouseSelectionGoesIntoVisualMode": false,
    "vim.replaceWithRegister": true,
    "vim.useCtrlKeys": false,
    "vim.autoSwitchInputMethod.enable": false,
    "vim.autoindent": false,
    "vim.highlightedyank.enable": true,
    "vim.smartRelativeLine": true,
    "vim.startInInsertMode": true,
    "vim.statusBarColorControl": true,
    "vim.useSystemClipboard": true,
    "vim.easymotion": true,
    "vim.handleKeys": {
        "": false,
        "": false,
        "": false,
    },

No source file or test is named. Reproduce the issue in VS Code using Ctrl+Shift+Left/Right while in insert mode, then trace the keybinding and mode-switching handling. Done means the shortcut preserves insert mode or has a documented option to disable the behavior, with regression coverage if the project has a relevant test location.